Equalizing-gear for vehicles.



PATENTED SEPT. 19, 1905.

0. GULLMAN.

EQUALIZING GEAR FOR VEHICLES.

APPLICATION FILED JUNE 27,1904.

lllll llvl 1 l I l I OTTO CULLMAN, OF CHICAGO, ILLINOIS.

EQUALlZlNG-GEAR FOR VEHICLES.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed June 2'7, 1904. Serial No. 214,425.

To all whom, it may concern:

Be it known that I, O'r'ro OULLMAN, a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Equalizing-Gear for Vehicles, of which the following, when taken in connection with the drawings accompanying and forming a part hereof, is a full and complete description suflicient to enable those skilled in the art to which it pertains to understand, use, and make the same.

This invention relates to that class of'vehicles wherein driving-wheels are rigidly secured to a divided or two-part axle, such axle being driven by a motor mounted on the vehicle and the two parts of the axle connected by equalizing-gear to enable the vehicle to be driven in a straight or curved direction without slippage of the wheels on the ground; and'the object of this invention is to obtain equalizing-gear which is economically made, durable, and not liable to get out of order, not liable to gather dirt or dust on the movable parts thereof, and not liable to lose, as by leakage, the oil placed therein to lubricate such movable parts.

In the drawings referred to, Figure 1 is a vertical sectional view of an equalizing-gear embodying this invention on line 1 1 of F ig.'2 viewed in the direction indicated by the arrows, and Fig. 2 is a horizontal sectional view of such equalizing-gear on line 2 2 of Fig. 1 viewed in the direction indicated by the arrows.

A reference-letter applied to designate a given partis used to indicate such part throughout both figures of the drawings wherever the same appears.

A A are the two parts of the axle on which the equalizing-gear embodying my invention is placed. These parts of the axle are shown as broken off just outside of the shell or casing of the apparatus in Fig. 1.

B is the casing or shell of the apparatus and consists of the two parts 6 b. b is the cover to part b.

(J is an external annular flange around the edge of part b of the casing adjacent to the cover I), and O is an internal annular flange around such edge of part I).

D D are screws or bolts by means of which the cover 6 is firmly secured to the part I) of the shell or casing.

E is a gear-wheel firmly secured to part A of the axle, and E is a like gear-wheel which is firmly secured to part A of such axle.

F is a ring or ferrule fitting loosely over adjacent ends of gears E E, such ends of these gear-wheels being turned down to a smaller diameter than is the diameter'ofthe toothed portion thereof.

G G are pinions the teeth whereof intermesh with the teeth of gear-wheels E E.

g is a part of the pinion Gr, which is of larger diameter than are the bearing ends thereof.

g g are the bearing ends of the pinions G G. These bearing ends are of course of less diameter than is the diameter of the toothed portion of such pinions.

H H are circular recesses in parts 6 6, respectively, of shell or casing B. Ends g g of the .pinions Gr G are journaled in the recesses H H.

I is an ordinary sprocket-wheel rim fitting the flange C of the shell and secured thereto, as by the bolts or screws J J.

. K is an annular rabbet on the flange C, and the rim I fits closely onto this annular rabbet. The diameter of the cover I) is substantially the same as the diameter ofthe circular hole in the rim I.

The inner annular flange C is made for the purpose of obtaining a circular pocket extending entirely around the casing on the inside thereof to hold the lubricating-oil used in the apparatus.

The equalizing-gear made as hereinbefore described is thus dust-proof except for-the dust which may pass through between the ends L L of the gears E E and the journalbearings M and M of such ends. Journalbearing M is in part 6 of the shell or casing B, and journal-bearing M is in the cover I) of the shell or casing.

The operation of this equalizing-gear is precisely the same as is the operation of the ordinary equalizing-gear, and hence no description thereof will be given by me.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In an equalizing-gear, the combination of a two-part casing, such parts-provided, respectively, with annular recesses on the inner faces thereof and one of such parts provided with an external annular flange on the edge thereof adjacent to the other part, with an annular rabbet on such flange, a sprocketrim fitting the rabbet, bolts extending through one part of the casing and through the annular flange on the other part, bolts extending through thesprocket-rim and through the annular flange, axle gear-wheels respectively journaled in the parts of the casing, and pinions' journaled in the annular recesses to intermesh with the axle gear-wheels; substantially as described.

2. In an equalizing-gear, a two-part casing, such parts respectively provided with annular recesses on the inner faces thereof and one of such parts provided with an internal annular flange and also with an external annular flange on the edge thereof adjacent to the other part, such external annular flange provided with an annular rabbet thereon, in combination with a sprocket-rim fitting over the rabbet, bolts extending through one part of the casing and through the external annular flange on the other part of the casing, bolts extending through the sprocket-rim and through such external annular flange, axle gear-wheels respectively journaled in the parts of the casing, and pinions journaled in the annular recesses to interrnesh with the axle gear-wheels; substantially as described.

3. In an equalizing-gear, a two-part casing, such parts respectively provided with annular recesses on the inner faces thereof to consti- 1 tute bearings for the pinions of the device, and one of such parts provided with an inner annular flange on the edge thereof adjacent to the other part, and means to attach such parts together; substantially as described.

4. In an equalizing-gear, a two-part casing, such parts respectively provided with annular recesses on the inner faces thereof and one of such parts provided with .an internal annular flange and with an external annular flange on the edge thereof adjacent to the other part, in combination with bolts extending through one part of the casing and through the external annular flange of the other part, axle gearwheels respectively journaled in the parts of the casing, and pinions journaled in the annular recesses to intermesh with the axle gearwheels; substantially as described.

In testimony whereof I hereunto set my 'hand, in the presence of the subscribing witnesses, at Chicago, Cook county, Illinois, this 10th day of June, A. D. 1904.

OTTO OULLMAN.

In presence of- CHARLES TURNER BROWN, 001m A. ADAMS. 

